When looking real carefully at the water off my dock I noticed a bunch of little red dots in the water. At first I thought they were just specks of some material floating around but soon noticed they were moving around. After catching one I put it on a white plastic board and you can see that it has legs moving around. What are these? They are only about the size of the tip of a ball-point pen and red in color. I will try taking a picture and posting it.